TLC2554IPW datasheet(15/37 Pages) TI

15 / 37 page

TLC2554, TLC2558

5-V, 12-BIT, 400 KSPS, 4/8 CHANNEL, LOW POWER,

SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH AUTO POWER DOWN

SLAS220A –JUNE 1999

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

modes using the FIFO: modes 01, 10, 11 timing (continued)

CSTART

SDI

INT

SDO

Hi-Z

From Channel 2

tconvert

†

‡‡

‡

Hi-Z

tsample

tconvert

Configure

Select

Conversion #1

Select

Conversion #4

Read FIFO

Next #1

Top of FIFO

From Channel 2

tconvert

† Command = Configure write for mode 01, FIFO threshold = 1/2

‡ Command = Read FIFO, 1st FIFO read

§ Command = Select ch2.

Figure 10. TLC2554/TLC2558 Mode 01 DSP Serial Interface (conversions triggered by FS)

CSTART

SDI

INT

SDO

Hi-Z

From Channel 2

(DSP)

From Channel 2

Configure

Select

Conversion #1

Select

Conversion #4

Read FIFO

First FIFO Read

‡‡

‡

Next #1

†

tsample(1)

tconvert(1)

tsample(2)

tsample(3)

tsample(4)

tconvert(2)

tconvert(3)

tconvert(4)

Hi-Z

tSample(i) > = MIN(tSample)

† Command = Configure write for mode 01, FIFO threshold = 1/2

‡ Command = Read FIFO, 1st FIFO read

§ Command = Select ch2.

Figure 11. TLC2554/TLC2558 Mode 01

µp/DSP Serial Interface (conversions triggered by CSTART)

TLC2554IPW Datasheet(PDF) 15 Page - Texas Instruments

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